Improvement in grain-separators



, w. w. DINGBE & A. B. PARQUHAR.

GRAIN SEPARATOR No.- 35,590. 'Patented'June 17, 1862.

UNITED STATES PATENT OFFICE.-

IMPROVEMENT IN GRA'lN-SEPARATORS.

Specification forming part of Letters Patent No. 35,590 dated June 17, i862.

1 of the construction and operation of the same,

reference being had to the annexed drawings, making a part-of this specification,in which- Figure 1 is a longitudinal section of the fan. Fig. 2 is a perspective view of the fan with a longitudinal view of the tailings-elevators.

Fig. 3 is the trough, screw, and elevator.- Fig. 4 is abag-holder.

.[n Fig. 1, A A A A is the perforated side plate of fan (mentioned in the spccificationof Mr. Gciser) having slot 13 for the cast projection on the movable plate to pass through,circular groove 0 C to receive the drum of the fan, and hole D for the eccentric-rod, regulating the shake of the shoe. E E E is a circular movable plate, the perforations of vwhich correspond with those in plate A A AA. (This is the movable plate K in Mr. Geisers specification.) There is one of these plates oncach side of the fan connected by the broad wooden bar F on the inside, and by the iron rodG on the outside of the fan. The iron rod G passes through the cast projection H, Fig. 2, on the movable plates E,and has a nut on either side of projection H, by which plates E are adjusted inside the fan. Between the plates E the wings of the fan revolve in the direction indicated by the arrows in Fig. 1. When the blast increases too much, it will act upon and raise wooden bar F, decreasing the admission of air, as explained by Mr. Geiser. The weight of wooden barF is more than sufficient to hold movable plates E open,or so that their perforations correspond with those of plates A. I Movable platesE are adjusted to suit different degrees of blast required, by hanging weights on iron rod G.

It will be seen that the .air in our fan after passing'wooden bar H is entirely unobstructed. By connecting movable plates E with the rod G outside the fan we have this necessary connection out of the blast and avoid thaangles shutsdown into and fits.

which the bar t in Mr. Geiscrs specification, Fig. 4, makes necessary in the drum, allowing our drum to be circular, which form of fers the leastpossible resistance to the motion of the air, thus enabling us to obtaina sufficient blast with one-third less speed, and consequently less power than is necessary in the fan asmade by Mr. Geiser. Rod G also furnishes a convenient place to hang the weights required to adjustthe blast to the dif' ferent kinds of grain to be cleaned. Making the side plates, A.with the grooves 0 form' the entire ends of the fan, enables us to make a stronger fan at less cost than when made as heretofore.

In Fig. 1 a shakingmotion is given to in clined plane I by the square parts of revolving shaft J. Down this inclined plane the grain and chaff pass and are delivered to the blast. The clean grain falling in hopper -K is caught in a bag secured to bag-holder L, Fig. 2. The heads of unthrashcd grain and what wheat is blown over the fan (called" tailin'gs are caught in the east trough M, a longitudinal section of which is shown in Fig. 1 and a full length view in Fig. 3,) in which is screw N, turning in the direction shown by the arrow and conveying the tailings to the enlarged part 0 of the trough M. This screw hasa pulley, 1?, over which passes the block-strap It, the blocks of which in their passage round take the .tailings from the enlarged part 0 up the inclined bottom of trunk ,S, from which they fall into a spout, into the thrasher again. The screw is driven by a pulley on its end. It will be seen (Fig. 3) that the screw not only conveys the tailingsto the side of the fan, but by pulley P furnishes the power to drive thebloek-stra-p R, and that enlarged part0 of the trough M also forms the lower end of trunk S,thus making a cheap and convenient tailings-elevator.

In Fig. 4 T is the opening through which the wheat passes' Uis the slide to shut off the grain when the bag is full. V is a flange by which the holder is secured to the hopper by screws,having latch W hinged to it. X is a flange having a notch in which latch W The mouth of the bag is drawn tightly around the flange X and down which they run through the notch, and the latch W is shut down upon it, thus holding the bag securely to. the hopper.

\Vhat we claim as our invention, and desire to secure by Letters Patent, is

l. Securing the drum of the fan in its proper position by grooves G 0, cast in perforated side plates A.

2. Connecting the movable plates E by the rod G on the outside of the fan.

3. The'eonlbination of trough O, screw N, and trunk S with the revolving block-strap B, when made and operated as set forth.

4. Bug-holder L, when made as described.

W. W. DINQEE. A. B. FARQUHAR.

Witnesses:

HORACE BONHAM, GEORGE N. SIIELLER. 

